#include <led.h>
void led_disp(unsigned char adrr,enable)
{
	 static unsigned char temp =0x00;
	 static unsigned char temp_old =0xff;	
	if(enable)
		temp |= 0x01 << adrr;
	else	
		temp &= ~(0x01 << adrr);

	if(temp != temp_old)
	{
		P0 = ~temp;
		P2 = P2 & 0X1F | 0X80;	
		P2 &= 0X1F;
		temp_old =temp;
	
	}



}